This thread has gotten lost. There was nothing in the original post about the chickens having cocci or being sick in the least. She is running out of feed and wanted to know if it was ok to stop with medicated feed. Rather than tying the answer to some arbitrary date, the idea is that when they leave the brooder (and the more crowded conditions), for the coop is as good a time as any to switch.
Cocci should not be a big deal in small backyard flocks. The commercial recommendations are for more industrial raising conditions. I use medicated feed because either I can't find any other chick starter, or it doesn't cost more (which makes it cheap insurance). But I doubt it is necessary in the conditions 95% of people on this site keep their chickens in.
Cocci should not be a big deal in small backyard flocks. The commercial recommendations are for more industrial raising conditions. I use medicated feed because either I can't find any other chick starter, or it doesn't cost more (which makes it cheap insurance). But I doubt it is necessary in the conditions 95% of people on this site keep their chickens in.